基于蒙特卡洛方法的主动声纳信号检测性能分析

主动声纳信号检测性能的分析上，目前在计算机仿真中一般假定混响包络的统计特性符合瑞利分布模型。基于此模型，已经有了较完善的理论。然而，在现代高分辨声纳系统中，混响包络的统计特性并不符合瑞利分布模型。此时在接收机工作特性分析时存在大量繁琐的公式推导。因此该文采用蒙特卡洛（Monte Carlo）统计试验方法，实现对瑞利分布混响背景下的主动声纳信号检测性能分析。结合对接收机工作特性曲线的仿真，得出了检测概率的理论值和仿真结果的误差曲线。误差曲线表明，蒙特卡洛方法在主动声纳信号检测的性能评估中是可行的。

Performance Analysis of Signal Detection for Active Sonar Based on Monte Carlo Method

Recently in the analysis of active sonar signal detecting performance, the statistical model of reverberation envelope is assumed to be in accord with Rayleigh - distribution in computer simulation. Based on this model, there are enough theories. However, in modern high - resolution sonar systems, the statistics of reverberation envelope is not in accord with Rayleigh - distributed model. There are lots of difficult formula computation. So, this essay, by utilizing the Monte Carlo statistical method, attempts to address the issue of detecting performance analysis of active sonar signal based on the Rayleigh - distributed reverberation. Through the simulation of receiver operation curve, an error estimation between the simulation results and theoretical ones of detection probability is attained. Analysis of the error curve proves that the application of the Monte Carlo method to the simulation of detecting active sonar signal is successful.